QCD sum rule study for a possible charmed pentaquark Θ c(3250)
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Abstract
We use QCD sum rules to study the possible existence of a Θc(3250) charmed pentaquark. We consider the contributions of condensates up to dimension 12 and work at leading order in αs. We obtain mΘc=(3.29±0.13) GeV, compatible with the mass of the structure seen by BABAR Collaboration in the decay channel B-→p̄Σc++π-π-. The proposed state is compatible with a previous proposed pentaquark state in the anticharmed sector. © 2013 American Physical Society.
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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 88, n. 7, 2013.
